The document discusses virtual keyboard technology. A virtual keyboard uses sensor technology and artificial intelligence to project a keyboard image onto any flat surface and track finger movements to input text. It has advantages like portability and flexibility. The document outlines the components of a virtual keyboard system including sensors, infrared light sources, and pattern projectors. Different types are described along with their uses, advantages like noise reduction, and disadvantages like lack of tactile feedback. Future applications are seen in devices like ATMs and spacecraft. Human: Thank you for the summary. You captured the key points effectively in 3 concise sentences.

1. VIRTUAL KEYBOARD
Presented By:-
Siddhant Ranjan Shivani
Branch- CSE(B)
Roll- 114119
Guided by:-
Er. Sanjay Sen

2. Our agenda’s are:-
Introduction
Need of virtual keyboard
Inside keyboard
Technology used
System architecture
Types of virtual keyboard
Uses
Advantages
Disadvantages
Future scope & implementations
Conclusion

3. Introduction:-
 A virtual keyboard actually is a key-in device, roughly a size of a fountain
pen, which uses highly advanced laser technology.
 Virtual keyboard is just another example of a today’s computer trend of
‘smaller and faster’.
 The new virtual keyboard technology uses sensor technology and artificial
intelligence to let users work on any surface as if it were a keyboard.
 In a virtual keyboard camera tracks the finger movements of the typist to get
the correct keystroke.
 The software and hardware part recognizes the typed characters and pass it
to the computer.

4. Need of virtual keyboard:-
 The Virtual Keyboard uses the infrared & laser technology to project a full-size
keyboard onto any flat surface. So we can use it almost anywhere.
 A virtual keyboard prevents our username or password from being stolen, especially
while using public computers, such as those available in Internet cafes. As the
sequence in which the keys appear will change every time the page is refreshed. So
they are useful from security point of view in Banks, ATM’s.
 The Virtual Keyboard is not restricted to the ‘QWERTY’ touch-typing paradigm ;
adjustments can be done to the software to fit other touch-typing paradigms as well,
such as the ‘DVORAK’ keyboard.

5. Inside keyboard:-
The processor in a keyboard has to understand several things that are important to
the utility of the keyboard, such as:
 Position of the key in the key matrix.
 The speed at which to transmit the typematics.

6. The microprocessor and controller circuitry of a keyboard
A look at the key matrix.

7. This system comprises of three modules:
1. The sensor module
2. IR-light source and
3. The pattern projector
Virtual keyboard technology:-

8. Sensor module:-
The Sensor Module serves as the eyes of the Keyboard
Perception technology .
The Sensor Module operates by locating the user's fingers
in 3-D space and tracking the intended keystrokes.
Keystroke information processes and can then be output to
host devices.

9. IR Light source :-
 The infrared light source emits a beam of infrared light .
 This light beam is designed to overlap the area on which the
keyboard pattern projector or printed image resides.
 This helps in recognizing the hand movements and the
pressing of keys .

10. Pattern projector:-
The pattern projector or optional printed image presents
the image of the keyboard
This image can be projected on any flat surface.
The projected image is that of a standard qwerty keyboard,
with all the keys and control functions as in the keyboard.

11. System architecture:-
This Fig. shows the physical setup
of the system:-
The 3D range camera is placed several cms over the
input surface, with a well-defined angle facing the
working area.
 The size of the working area, limited by the spatial
resolution of the camera, is 15 cm × 25 cm, which is
comparable to a full-size laptop-computer keyboard.
Virtual-keyboard demonstration-
system setup
The display projector is mounted on the camera, facing the same area, which would
generate the visual feedback for the keyboard and input information

12. Different virtual keyboards:-
 There are different types of virtual keyboards, manufactured by
various companies which provide different levels of functionalities.
 The different types of virtual keyboards are:
1. Developer VKB
2. Canesta
3. Sense board technologies
4. Kitty
5. Infocus

13. Developer VKB:-
 Siemens procurement logistics services rechargeable batteries similar to
those in cell phones.
 As a class 1 laser, the output power is below the level at which eye injury
can occur.

14. Canesta:-
 In the canesta keyboard the same laser is also used to scan the projection field
and extract 3D data.
 They also have a chip set, electronic perception technology, which they supply
for 3rd parties to develop products using the projection/scanning technology.

15. Sense board technologies:-
 Here the image is not projected on to any surface.
 The sense board sb04 technology is an extreme case of a hybrid approach. The
sensing transducer is neither a laser scanner nor a camera. Rather, it is a
bracelet-like transducer that is worn on the hands which captures hand and
finger motion.
 Sensors made of a combination of rubber and plastic are attached to the user's
palms in such a way that they do not interfere with finger motions.

16. Kitty:-
 KITTY, an acronym for Keyboard-Independent Touch-Typing, is a Finger mounted
keyboard that uses touch typing as a method of data entry.
 It is a revolutionary finger mounted keyboard for wearable computers pocket pc’s
and pda’s alike.

17. Infocus :-
They do not use laser technology. This has that advantage of delivering high
quality colour images with a mature technology like video camera.
It has the disadvantage of larger size, lower contrast, and higher power
requirements, compared to laser projection systems.

18. Uses of virtual keyboard:-
To make notes during smart classes, business meeting and in library as no
one will hear your keying sound.
For those people who travel a lot , it is useful to carry being small in size
and lighter in weight , even you can put it in your shirt’s pocket.
It is useful in hospitals where low noise is essential.
It can be use in gaming control and TV remote control.

19. Advantages of virtual keyboard:-
 Portability, accuracy , flexibility.
 Speed of text entry.
 Noise less than conventional
keyboards.
 The typing does not require a lot
of force. So easing the strain on
wrists and digits.
 They are also made to be water
proof and hence less prone to
damage when spills occur.
 Maintenance of the laser
keyboards is much easier.

20. Disadvantages:-
Tactile feel is not possible.
Dirty screens.
Virtual keyboards is hard to get used to. since it involves typing in thin air,
hence it requires a little practice. Only people who are good at typing can
use it efficiently.
It is very costly ranging from 150-200 dollars.
The room in which virtual keyboard is used should not be very bright so that
the keyboard is properly visible.

21. Future scope & implementations:-
Laser keyboards can be embedded into ATM’s.
Laser keyboards can be used into space crafts as they are very lighter
and smaller.
It can be embedded into digital lockers into banks, hostels for entering
passwords and digital door lockers based on passwords.

22. Conclusions:-
A virtual keyboard system based on a true-3d optical range camera
is presented.
No training is required by the system that automatically adapts
itself to the background conditions when turned on.
The feedback text and graphics may be integrated with such
projector, thus enabling truly virtual working area.
It is also used in 6th sense technology device in which it is not
depends on surface.
Virtual Keyboard Used in
6th Sense Technology
Devices

23. THANK YOU !!
For Your Kind Attention
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